import java.util.Arrays;

public class text {
    public static void main(String[] args) {
        System.out.println("12300");
        System.out.println("123");
        int aa = 2;
        switch (aa){
            case 1:
                System.out.println("1");
                break;
            case 2 :
                System.out.println("2");
                break;
            default:
                System.out.println("unnknow");
                break;
        }
    }
}
